import java.util.Scanner;

public class Main {
    private static volatile int count = 0;
    public static void main(String[] args) {
        Thread t1 = new Thread(()->{
            while(count == 0){
                ;
            }
            System.out.println("t1执行完毕");
        });

        Thread t2 = new Thread(()->{
            Scanner scanner = new Scanner(System.in);
            System.out.println("请输入一个整数：");
            count = scanner.nextInt();
        });
        t1.start();
        t2.start();
    }
}

